Home / 891,619.23-1,230,550.61-499,301.61

Finding the Fourth Proportional to 891,619.23, 1,230,550.61 and 499,301.61

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Solution

The fourth proportional to 891,619.23, 1,230,550.61 and 499,301.61 is: 689,101.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,619.23 : 1,230,550.61 = 499,301.61 : x
  2. Step 2: Convert to fraction form
    891,619.23/1,230,550.61 = 499,301.61/x
  3. Step 3: Cross multiply
    891,619.23x = 1,230,550.61 × 499,301.61
  4. Step 4: Simplify right side
    891,619.23x = 614,415,900,759.48
  5. Step 5: Solve for x
    x = 614,415,900,759.48/891,619.23
  6. Step 6: Final answer
    x = 689,101.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.